Cayman sits next to 4 phonetic neighbors — Caden, Cameron, and Kayman are the closest matches by sound. Most share Cayman's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"caiman, crocodilian reptile"
"eternal king, pure lineage"
"zero, the concept of nothing"
"Yahweh is gracious"
"strawberry grower"
"Yahweh is gracious"
"forest meadow"
"source, wellspring"
"deep red, the color red"
"keeper of grain, granary worker"
"short form of Desmond (south Munster, Ireland)"
"edge of a shield"
"guardian, soldier"
"Yahweh is gracious"
"Scottish form of Thomas"
"bear strength"
"corn, golden grain"
"man of prayer"
"ancestor's descendant (alternative etymology)"
"little fire"
Similar sound: These names share phonetic patterns with Cayman — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Carib/Arawak origins, giving them the same cultural heritage as Cayman.
Rhythm: Cayman is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.